If I follow your logic properly, then, when reading the sentence

"The disk with all the PNG files was read too frequently for the IDE controller, so we switched to a SCSI drive"

you would pronounce "PNG" as "Pea En Gee", "IDE" as "Eyed", and "SCSI" as "Ess See Ess Eye"? I would have pronounced "PNG" as "Ping", "IDE" as "Eye Dee Ee", and "SCSI" as "Scuzzy". I wonder if our differences are regional?

For the record, I pronounce "SQL" the same was that you do.